Paste your text above, then use the lower / UPPER / Title Case buttons in the toolbar to convert instantly — no retyping.
Case Conversion Modes
| Mode | Example |
|---|---|
| UPPERCASE | EVERY LETTER CAPITALIZED |
| lowercase | every letter small |
| Title Case | First Letter Of Major Words Capitalized |
| Sentence case | Only the first letter of each sentence |
When to Use Each Case
- Title Case — headlines, book titles, and section headers in US-style publications. AP style lowercases short prepositions (of, to, in); Chicago style has its own rules — when in doubt, capitalize words of four letters or more.
- Sentence case — the default for UX writing, email subjects, and most modern web headlines. Easier to read, less shouty, now used by most major tech products.
- UPPERCASE — acronyms, legal disclaimers, and short labels only. All-caps body text reads up to 10% slower and screen readers may spell it letter by letter.
- lowercase — resetting badly formatted text (like a pasted ALL-CAPS email) before reformatting it properly.
Common Fixes This Tool Handles
- Copy that arrived IN ALL CAPS from a form or legacy system.
- Headlines that need to move between Title Case and sentence case house styles.
- Lists where capitalization is inconsistent across items.
Does Title Case here follow AP or Chicago style?
The converter capitalizes the first letter of every word — the simple, predictable rule. For strict AP or Chicago compliance, convert first, then lowercase the short prepositions and articles your style guide requires.
Will converting case change my spacing or line breaks?
No. The converter only changes letter case — every space, line break, and punctuation mark stays exactly where it was, so you can convert a formatted draft without breaking its layout.